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ISA550 I can't configure it at all


I've just installed a firewall ISA550 on my network, but when I try to update the firewall's anti-virus it gets an error: "Anti-virus failed to get signature information. Please check and try again". What I have to check ?

When I try to check my account settings inside the firewall (Devide management -> Cisco services&support -> Account), it gets another error "Check the WAN connection and try again". Maybe there's something that I didn't configured that blocks my internet ? Or maybe are the cables..

The network consists in 1 router then the firewall and then a switch. So how have to be the cables?

Anyone knows some option that it's very important to configure on the firewall in order to have internet? Maybe by default the firewall blocks the internet, but i have permited the traffic on the ACL.

So please if anyone has any idea or maybe any doubt in the configuration that I have, please tell me.


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